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linux
linux-davinci-2.6.23
Commits
f4266ab4
Commit
f4266ab4
authored
Feb 13, 2006
by
David S. Miller
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Plain Diff
[SPARC64] sunhv: Use virtual-devices layer to get interrupt.
Signed-off-by:
David S. Miller
<
davem@davemloft.net
>
parent
e77227eb
Changes
1
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1 changed file
with
67 additions
and
6 deletions
+67
-6
drivers/serial/sunhv.c
drivers/serial/sunhv.c
+67
-6
No files found.
drivers/serial/sunhv.c
View file @
f4266ab4
...
...
@@ -20,6 +20,8 @@
#include <asm/hypervisor.h>
#include <asm/spitfire.h>
#include <asm/vdev.h>
#include <asm/irq.h>
#if defined(CONFIG_MAGIC_SYSRQ)
#define SUPPORT_SYSRQ
...
...
@@ -407,6 +409,60 @@ static void __init sunhv_console_init(void)
register_console
(
&
sunhv_console
);
}
static
int
__init
hv_console_compatible
(
char
*
buf
,
int
len
)
{
while
(
len
)
{
int
this_len
;
if
(
!
strcmp
(
buf
,
"qcn"
))
return
1
;
this_len
=
strlen
(
buf
)
+
1
;
buf
+=
this_len
;
len
-=
this_len
;
}
return
0
;
}
static
unsigned
int
__init
get_interrupt
(
void
)
{
const
char
*
cons_str
=
"console"
;
const
char
*
compat_str
=
"compatible"
;
int
node
=
prom_getchild
(
sun4v_vdev_root
);
unsigned
int
irq
;
char
buf
[
64
];
int
err
,
len
;
node
=
prom_searchsiblings
(
node
,
cons_str
);
if
(
!
node
)
return
0
;
len
=
prom_getproplen
(
node
,
compat_str
);
if
(
len
==
0
||
len
==
-
1
)
return
0
;
err
=
prom_getproperty
(
node
,
compat_str
,
buf
,
64
);
if
(
err
==
-
1
)
return
0
;
if
(
!
hv_console_compatible
(
buf
,
len
))
return
0
;
/* Ok, the this is the OBP node for the sun4v hypervisor
* console device. Decode the interrupt.
*/
err
=
prom_getproperty
(
node
,
"interrupts"
,
(
char
*
)
&
irq
,
sizeof
(
irq
));
if
(
err
==
-
1
)
return
0
;
return
sun4v_build_irq
(
sun4v_vdev_devhandle
,
irq
,
4
,
0
);
}
static
u32
sunhv_irq
;
static
int
__init
sunhv_init
(
void
)
{
struct
uart_port
*
port
;
...
...
@@ -415,6 +471,10 @@ static int __init sunhv_init(void)
if
(
tlb_type
!=
hypervisor
)
return
-
ENODEV
;
sunhv_irq
=
get_interrupt
();
if
(
!
sunhv_irq
)
return
-
ENODEV
;
port
=
kmalloc
(
sizeof
(
struct
uart_port
),
GFP_KERNEL
);
if
(
unlikely
(
!
port
))
return
-
ENOMEM
;
...
...
@@ -424,22 +484,23 @@ static int __init sunhv_init(void)
port
->
type
=
PORT_SUNHV
;
port
->
uartclk
=
(
29491200
/
16
);
/* arbitrary */
/* XXX Get interrupt. XXX */
if
(
request_irq
(
0
/* XXX */
,
sunhv_interrupt
,
if
(
request_irq
(
sunhv_irq
,
sunhv_interrupt
,
SA_SHIRQ
,
"serial(sunhv)"
,
port
))
{
printk
(
"sunhv: Cannot get IRQ %x
\n
"
,
0
/* XXX */
);
printk
(
"sunhv: Cannot get IRQ %x
\n
"
,
sunhv_irq
);
kfree
(
port
);
return
-
ENODEV
;
}
printk
(
"SUNHV: SUN4V virtual console, IRQ[%08x]
\n
"
,
sunhv_irq
);
sunhv_reg
.
minor
=
sunserial_current_minor
;
sunhv_reg
.
nr
=
1
;
sunhv_reg
.
cons
=
&
sunhv_console
;
ret
=
uart_register_driver
(
&
sunhv_reg
);
if
(
ret
<
0
)
{
free_irq
(
0
/* XXX */
,
up
);
free_irq
(
sunhv_irq
,
up
);
kfree
(
port
);
return
ret
;
...
...
@@ -463,7 +524,7 @@ static void __exit sunhv_exit(void)
BUG_ON
(
!
port
);
uart_remove_one_port
(
&
sunhv_reg
,
port
);
free_irq
(
0
/* XXX */
,
port
);
free_irq
(
sunhv_irq
,
port
);
sunserial_current_minor
-=
1
;
...
...
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